Air conditioner unit, air conditioning system, and air conditioning control method

ABSTRACT

An air conditioner unit includes an air conditioner body, a first outgoing chamber, an outgoing connection section, an outgoing communication member, an outgoing port, and an outgoing port member. Through the first outgoing chamber, adjusted air flowing in from the air conditioner body is supplied to a target room. Through the outgoing connection section, the first outgoing chamber communicates with a second outgoing chamber of an adjacent air conditioner unit. The outgoing connection section is connected to the first outgoing chamber. The outgoing communication member is configured to open and close the outgoing connection section. Through the outgoing port, the adjusted air is supplied from the first outgoing chamber to the target room. The outgoing port member is configured to open and close the outgoing port.

CROSS-REFERENCE TO RELATED APPLICATION

This application is based upon and claims the benefit of priority of the prior Japanese Patent Application No. 2014-082199 filed on Apr. 11, 2014, the entire contents of which are incorporated herein by reference.

FIELD

The embodiments discussed herein are related to an air conditioner unit, an air conditioning system, and an air conditioning control method.

BACKGROUND

There is an air conditioning system that processes an outlet air of a cold water coil by a package air conditioner, blows out the air into an underfloor chamber, and blows out the air from an air outlet to a rack equipped with a communication apparatus.

A related technique is disclosed in, for example, Japanese Laid-open Patent Publication No. 2002-168479.

In an air conditioning system, a plurality of air conditioner units exhibit supply capacity of desirable adjusted air and, in addition, the air conditioning system may be redundant by preparing a spare air conditioner in advance.

However, if the spare air conditioner is provided in each of the plurality of air conditioner units, the number of spare air conditioners is excessive.

SUMMARY

According to an aspect of the present invention, provided is an air conditioner unit including an air conditioner body, a first outgoing chamber, an outgoing connection section, an outgoing communication member, an outgoing port, and an outgoing port member. Through the first outgoing chamber, adjusted air flowing in from the air conditioner body is supplied to a target room. Through the outgoing connection section, the first outgoing chamber communicates with a second outgoing chamber of an adjacent air conditioner unit. The outgoing connection section is connected to the first outgoing chamber. The outgoing communication member is configured to open and close the outgoing connection section. Through the outgoing port, the adjusted air is supplied from the first outgoing chamber to the target room. The outgoing port member is configured to open and close the outgoing port.

The object and advantages of the invention will be realized and attained by means of the elements and combinations particularly pointed out in the claims.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, as claimed.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view illustrating an air conditioning system of a first embodiment;

FIG. 2 is a perspective view illustrating an air conditioner unit;

FIG. 3 is a front view illustrating a connection state of air conditioner units;

FIG. 4 is a block diagram illustrating the air conditioning system of the first embodiment;

FIG. 5 is a plan view illustrating the air conditioning system of the first embodiment;

FIG. 6 is a flowchart illustrating an example of a control flow of the air conditioning system of the first embodiment;

FIG. 7 is a plan view illustrating the air conditioning system of the first embodiment;

FIG. 8 is a plan view illustrating an air conditioning system of a first comparative example;

FIG. 9 is a flowchart illustrating an example of a control flow of the air conditioning system of the first embodiment;

FIG. 10 is a plan view illustrating the air conditioning system of the first embodiment;

FIG. 11 is a plan view illustrating the air conditioning system of the first embodiment;

FIG. 12 is a plan view illustrating the air conditioning system of the first embodiment;

FIG. 13 is a plan view illustrating the air conditioning system of the first embodiment;

FIG. 14 is a plan view illustrating an air conditioning system of a second embodiment;

FIG. 15 is a plan view illustrating an air conditioning system of a third embodiment;

FIG. 16 is a plan view illustrating an air conditioning system of a fourth embodiment;

FIG. 17 is a plan view illustrating the air conditioning system of the fourth embodiment; and

FIG. 18 is a plan view illustrating an air conditioning system of a second comparative example.

DESCRIPTION OF EMBODIMENTS

A first embodiment will be described in detail with reference to the drawings.

FIG. 1 illustrates an air conditioning system 12 including air conditioner units 14 of the first embodiment. FIG. 2 illustrates one of the air conditioner units 14. The air conditioning system 12 includes a plurality of air conditioner units 14.

The air conditioning system 12 of the first embodiment sends adjusted air, for example, from an underfloor chamber 16 to a server room 18 and cools a plurality of servers 22 disposed in the server room 18. The server room 18 is an example of an air conditioning target room. A structure including a plurality of server rooms 18 as illustrated in FIG. 5 and the like includes a data center and the like.

Air of the server room 18 returns through a ceiling chamber 20 to the air conditioner units 14. In the first embodiment, the underfloor chamber 16, the server room 18, and the ceiling chamber 20 are integrated as a server module. In the first embodiment, as illustrated in FIG. 3, three air conditioner units 14 correspond to one server module.

As illustrated in FIG. 2 in detail, an air conditioner unit 14 includes an air conditioner body 24. The air conditioner body 24 adjusts flow-in air and makes the air flow out. In the present embodiment, the air conditioner body 24 includes a cooling device 26 therein. The air conditioner body 24 cools the flow-in air with the cooling device 26. As illustrated in FIG. 4, driving of the air conditioner body 24 is controlled by a control device 28.

The air conditioner unit 14 includes an air supply chamber 30 and a return air chamber 32. Each of the air supply chamber 30 and the return air chamber 32 is connected to the air conditioner body 24 by a duct 34.

The air supply chamber 30 includes an air supply port 36 connected to the underfloor chamber 16. The air supply port 36 is provided with an air supply port opening and closing member 38 that is controlled to be opened or closed by the control device 28. The return air chamber 32 includes a return air port 40 connected to the ceiling chamber 20. The return air port 40 is provided with a return air port opening and closing member 42 that is controlled to be opened or closed by the control device 28.

If the air conditioner body 24 is driven in a state where the air supply port opening and closing member 38 and the return air port opening and closing member 42 are opened, as illustrated by arrows F1 in FIG. 1, the adjusted air flows from the air supply chamber 30 to the server room 18 through the underfloor chamber 16. Then, as illustrated by arrows F2 in FIG. 1, the air of the server room 18 flows to the air conditioner body 24 through the ceiling chamber 20 and the return air chamber 32. That is, a circulation path 44 in which the air returns from the air supply chamber 30 to the return air chamber 32 through the server room 18 is formed.

If at least one of the air supply port opening and closing member 38 and the return air port opening and closing member 42 is closed, the circulation path 44 is also closed and the flow of the air illustrated by the arrows F1 and F2 may be inhibited. That is, the air supply port opening and closing member 38 and the return air port opening and closing member 42 may be said to be examples of a circulation path opening and closing member.

As illustrated by arrows F3 in FIG. 3, the air that is returned to the return air chamber 32 flows from the return air chamber 32 to the air supply chamber 30 through the air conditioner body 24. The duct 34 is provided with a backflow suppression member 46 that suppresses the flow (backflow) of the air in a reverse direction of the arrows F3. As the backflow suppression member 46, for example, a check valve may be used.

As illustrated in FIGS. 2 and 3, both the air supply chamber 30 and the return air chamber 32 are rectangular tubular members and disposed in such a manner that a longitudinal direction (arrow direction L2 in FIGS. 2 and 3) is a lateral direction. The lateral direction coincides with an arrangement direction (arrow direction L1 in FIG. 1) of the plurality of air conditioner units 14. Furthermore, a length L3 of the air supply chamber 30 is equal to a length L4 of the return air chamber 32.

Air supply side connection sections 48 are provided on one end side and the other end side of the air supply chamber 30 in the longitudinal direction. As illustrated in FIG. 2, an air supply side opening and closing member 50 is provided in each of the air supply side connection sections 48. As illustrated in FIG. 4, the air supply side opening and closing member 50 is controlled to be opened or closed by the control device 28.

Return air side connection sections 52 are provided on one end side and the other end side of the return air chamber 32 in the longitudinal direction. As illustrated in FIG. 2, a return air side opening and closing member 54 is provided in each of the return air side connection sections 52. As illustrated in FIG. 4, the return air side opening and closing member 54 is controlled to be opened or closed by the control device 28.

As illustrated in FIGS. 1 and 5, in the air conditioning system 12, the plurality of air conditioner units 14 are arranged in the same direction as the longitudinal direction of the air supply chamber 30. The air supply chambers 30 of the air conditioner units 14 are connected at the air supply side connection sections 48 and the return air chamber 32 is connected at the return air side connection sections 52.

As illustrated in FIG. 5, in the first embodiment, a plurality (this represents a natural number N; N=3 in FIG. 5) of air conditioner units 14 are provided with respect to one server room 18 (air conditioning target room).

Furthermore, as illustrated in FIG. 5, in the first embodiment, a spare machine unit 62 is provided at an end in the arrangement direction of the air conditioner units 14. As illustrated in FIGS. 4 and 5, the spare machine unit 62 includes an air conditioning spare machine body 64, the air supply chamber 30, and the return air chamber 32. The air supply chamber 30 of the spare machine unit 62 is an example of an air supply spare chamber and the return air chamber 32 is an example of a return air spare chamber.

The air supply chamber 30 of the spare machine unit 62 is connected to the air supply chamber 30 of an adjacent air conditioner unit 14 by an air supply side connection section 48. Similarity, the return air chamber 32 of the spare machine unit 62 is connected to the return air chamber 32 of the adjacent air conditioner unit 14 by a return air side connection section 52.

However, the spare machine unit 62 itself does not correspond to a particular server room 18 (air conditioning target room) and the air supply port 36 and the return air port 40 of the spare machine unit 62 remain closed.

As described above, the spare machine unit 62 may employ the same structure as that of the air conditioner unit 14 except that the air supply port 36 and the return air port 40 are not connected to the server room 18. Thus, the air conditioner unit 14 may be used as the spare machine unit 62. Instead of this, for example, a structure in which the air supply port 36 and the return air port 40 are omitted in the air conditioner unit 14 may be provided as a new spare machine unit 62.

According to the first embodiment, since such an air conditioning spare machine body 64 is provided, redundancy is achieved in the air conditioning system 12, as an ability to send the adjusted air, by the number (one in FIG. 5) of the air conditioning spare machine bodies 64.

The control device 28 grasps a relationship between each load and power consumption of the air conditioner body 24 on the basis of a built-in database or the like. As illustrated in FIG. 5, in the first embodiment, the control device 28 grasps, for each server room 18, a plurality of air conditioner units 14 that cool the server room 18 as a unit set 14G. The control device 28 grasps the load of each server room 18 by power measurement or the like. Furthermore, the control device 28 grasps a driving state of the air conditioner body 24 and the air conditioning spare machine body 64, and an opening and closing state of the air supply port opening and closing member 38, the return air port opening and closing member 42, the air supply side opening and closing member 50, and the return air side opening and closing member 54.

Next, an operation and an air conditioning control method of the first embodiment will be described.

As illustrated in FIGS. 1, 3, and 5, the air conditioning system 12 of the first embodiment includes the plurality of air conditioner units 14.

FIG. 5 illustrates a state where all air conditioner bodies 24 of the plurality of air conditioner units 14 are driven. At this time, driving of the air conditioning spare machine body 64 is stopped. In the drawings, “x” is given to the air conditioner body 24 and the air conditioning spare machine body 64 of which driving are stopped.

The air supply side opening and closing member 50 and the return air side opening and closing member 54 positioned at a boundary of the server room 18 are closed. Furthermore, the air supply side opening and closing member 50 and the return air side opening and closing member 54 between the air conditioner unit 14 and the spare machine unit 62 are also closed. In the drawings, “x” is given to the air supply side connection section 48 and the return air side connection section 52 which are closed.

Thus, for each of the plurality of server rooms 18, the adjusted air is sent from N (N=3 in FIG. 5) air conditioner bodies 24. Then, the air is returned from each server room 18 to the same N air conditioner bodies 24. The control device 28 grasps the load of each air conditioner body 24, the air conditioning spare machine body 64, and each server room 18.

FIG. 6 illustrates an example of a flowchart of an air conditioning control method in the air conditioning system 12 of the first embodiment. According to this control flow, even when one of the air conditioner bodies 24 is stopped, it is possible to send the adjusted air from N air conditioner bodies 24 to each server room 18 by driving the air conditioning spare machine body 64 that has been stopped.

In the control flow, first, in S12, presence or absence of an air conditioner body 24 that is stopped is determined. If it is determined that the air conditioner body 24 that is stopped is absent, the control flow is finished. A cause of stoppage of the air conditioner body 24 is not specifically limited and, for example, stoppage for inspection is also included in addition to the stoppage due to failure.

If it is determined that an air conditioner body 24 (air conditioner body 24N in FIG. 7) that is stopped is present, the air conditioning spare machine body 64 is driven in S14. Then, the air supply chamber 30 (air supply spare chamber) of the spare machine unit 62 is caused to communicate with the air supply chamber 30 of the adjacent air conditioner unit 14 and the return air chamber 32 (return air spare chamber) of the spare machine unit 62 is caused to communicate with the return air chamber 32 of the adjacent air conditioner unit 14.

In S16, the opening and closing states of the air supply side opening and closing member 50 and the return air side opening and closing member 54 are changed and communication positions between the air supply chambers 30 and communication positions between the return air chambers 32 are changed. Specifically, as illustrated in FIG. 7, the communication positions are changed so that the air conditioner units 14 sending the adjusted air to each server room 18 are shifted, between the air conditioner body 24N that is stopped and the air conditioning spare machine body 64, by one towards the air conditioning spare machine body 64 side.

In S18, the air supply port opening and closing member 38 and the return air port opening and closing member 42 of the air conditioner unit 14 in which the destination of adjusted air is changed are closed. In the example illustrated in FIG. 7, for example, the air supply port opening and closing member 38 and the return air port opening and closing member 42 of the air conditioner unit 14M are closed. In the drawings, “x” is given to the air supply port opening and closing member 38 and the return air port opening and closing member 42 which are closed.

Thus, even if one of the air conditioner bodies 24 is stopped, it is possible to send the adjusted air from N air conditioner bodies 24 (including the air conditioning spare machine body 64) to each server room 18.

In the control flow illustrated in FIG. 6, the order of S14, S16, and S18 may be different from that in the above description and any or all of the processes may be performed concurrently.

FIG. 8 illustrates an air conditioning system 112 of a first comparative example.

In the air conditioning system 112 of the first comparative example, N (N=3 in FIG. 8) air conditioner bodies 24 are provided in each server room 18 and one air conditioning spare machine body 64 is provided in each server room 18.

Thus, the number of the air conditioning spare machine bodies 64 that are provided in the air conditioning system 112 of the first comparative example is the same as the number of the server rooms 18.

In the air conditioning system 12 of the first embodiment, in a case where one air conditioner body 24 is stopped, it is possible to ensure redundancy without providing the air conditioning spare machine body 64 in each server room 18. Since one air conditioning spare machine body 64 may ensure redundancy, it is possible to reduce the number of the air conditioning spare machine bodies 64 compared to the air conditioning system 112 of the first comparative example. The reduction of the number of the air conditioning spare machine bodies 64 allows reduction of the cost and conservation of the space (narrowing an installation space) of the air conditioning system 12.

The air conditioning system 12 of the first embodiment includes the air conditioning spare machine body 64. Since the air conditioning spare machine body 64 includes the air supply chamber 30 (air supply spare chamber), it is possible to easily and reliably be connected to the air supply chamber 30 of the adjacent air conditioner body 24. Furthermore, since the air conditioning spare machine body 64 includes the return air chamber 32 (return air spare chamber), it is possible to easily and reliably be connected to the return air chamber 32 of the adjacent air conditioner body 24.

In the air conditioning system 12 of the first embodiment, if a desirable amount of the adjusted air of each server room 18 is changed, it is possible to adjust a sending amount of the adjusted air to the server room 18 by a control flow of the air conditioning control method illustrated in FIG. 9.

In a control flow illustrated in FIG. 9, in S22, presence or absence of a server room 18 in which the desirable amount of the adjusted air is reduced is determined. If it is determined that there is a server room 18 (server room 18A in FIGS. 10 and 11) in which the desirable amount of the adjusted air is reduced, presence or absence of a server room 18 in which the desirable amount of the adjusted air is increased is determined in S24.

If it is determined that the server room 18 in which the desirable amount of the adjusted air is increased is absent, an air conditioner body 24 of the air conditioner unit 14 which sends the adjusted air to a server room 18A in which the desirable amount of the adjusted air is reduced is stopped in S26. Specifically, in the example illustrated in FIG. 10, the air conditioner body 24A of an air conditioner unit 14A is stopped. Then, the control flow is finished.

In the example illustrated in FIG. 10, the number of the server rooms 18 in which the desirable amount of the adjusted air is reduced is one, however, the number of the server rooms 18 in which the desirable amount of the adjusted air is reduced may be two (or more) as illustrated FIG. 12. In this case, it is possible to stop air conditioner bodies 24 corresponding to the server rooms 18 in which the desirable amount of the adjusted air is reduced. It is possible to send the adjusted air from two air conditioner bodies 24 to a server room 18 in which the desirable amount of the adjusted air is increased.

If it is determined that a server room 18 (server room 18B illustrated in FIG. 12) in which the desirable amount of the adjusted air is increased is present, in S28, the communication positions between the air supply chambers 30 and the communication positions between the return air chambers 32 are changed by changing the opening and closing states of the air supply side opening and closing members 50 and the return air side opening and closing members 54. Specifically, the opening and closing states of specific air supply side opening and closing members 50 and specific return air side opening and closing members 54 are changed as illustrated in FIG. 12 and thereby, the communication positions are changed so that the air conditioner units 14 sending the adjusted air to each server room 18 between the server room 18A and the server room 18B are shifted by one toward the server room 18A side.

In S30, the air supply port opening and closing members 38 and the return air port opening and closing members 42 of air conditioner units 14B in which the destination of the adjusted air is changed are closed. Then, the control flow is finished.

If it is determined in S22 that the server room 18 in which the desirable amount of the adjusted air is reduced is absent, presence or absence of a server room 18 in which the desirable amount of the adjusted air is increased is determined in S32.

If it is determined that the server room 18 in which the desirable amount of the adjusted air is increased is absent, the control flow is finished.

If it is determined that a server room 18 (server room 18B illustrated in FIG. 13) in which the desirable amount of the adjusted air is increased is present, the air conditioning spare machine body 64 is driven in S34.

Then in S28, the communication positions between the air supply chambers 30 and the communication positions between the return air chambers 32 are changed by changing the opening and closing states of the air supply side opening and closing members 50 and the return air side opening and closing members 54. Specifically, the opening and closing states of specific air supply side opening and closing members 50 and specific return air side opening and closing members 54 are changed as illustrated in FIG. 13 and thereby, the communication positions are changed so that the air conditioner units 14 sending the adjusted air to each server room 18 between an air conditioner body 24C corresponding to the server room 18B and the air conditioning spare machine body 64 are shifted by one towards the air conditioning spare machine body 64 side.

In S30, the air supply port opening and closing members 38 and the return air port opening and closing members 42 of the air conditioner units 14 in which the destination of the adjusted air is changed are closed.

Thus, according to the present embodiment, if the desirable amount of the adjusted air of each server room 18 is changed, the communication states between the air supply chambers 30 and the communication states between the return air chambers 32 are changed depending on the change of the desirable amount of the adjusted air, and it is possible to send the adjusted air of an appropriate amount to each server room 18.

In the first embodiment, each air conditioner unit 14 includes the air supply side connection section 48 and the return air side connection section 52. The air supply side connection section 48 may be opened and closed by the air supply side opening and closing member 50 and the return air side connection section 52 may be opened and closed by the return air side opening and closing member 54. By arranging a plurality of air conditioner units 14 in a line, it is possible to realize an air conditioning system 12 in which the air supply chambers 30 are connected to each other, the return air chambers 32 are connected to each other, and the air supply side connection sections 48 and the return air side connection sections 52 are controlled to be opened and closed.

Two air supply side connection sections 48 are included in one air supply chamber 30 and two return air side connection sections 52 are included in one return air chamber 32. Thus, in the air conditioning system 12 in which three or more air conditioner units are arranged, it is possible to apply the air conditioner unit 14 midway (other than both ends) in the arrangement direction. In other words, it is possible to realize an air conditioning system in which three or more air conditioner units are arranged by using the air conditioner units 14.

The two air supply side connection sections 48 are respectively provided on one end side and the other end side of one air supply chamber 30. The two return air side connection sections 52 are respectively provided on one end side and the other end side of one return air chamber 32. Thus, as illustrated in FIG. 5, it is possible to realize an air conditioning system 12 having a structure in which a plurality of air conditioner units 14 are linearly arranged.

Since the air supply chamber 30 and the return air chamber 32 have the same length as each other, when the plurality of air conditioner units 14 are arranged, no gap is formed anywhere between the air supply chambers 30 and between the return air chambers 32. That is, it is possible to connect the air supply chambers 30 to each other and the return air chambers 32 to each other without using additional connection members to fill a gap.

Since each air conditioner unit 14 includes the air supply port opening and closing member 38 and the return air port opening and closing member 42, it is possible to easily switch the opening and closing state of the circulation path 44. The air supply port opening and closing member 38 and the return air port opening and closing member 42 are examples of the circulation path opening and closing member and either one may switch the opening and closing state of the circulation path 44.

Since the air supply port opening and closing member 38 is provided in the air supply port 36 and the return air port opening and closing member 42 is provided in the return air port 40, which are examples of the circulation path opening and closing member, it is possible to switch the opening and closing state of the circulation path without changing the structure of the server room 18.

Particularly, it is possible to effectively suppress the outflow of the adjusted air from the air supply chamber 30 to the air conditioning target room (the server room 18) and it is possible to suppress the circulation of the air through the circulation path 44 by providing the air supply port opening and closing member 38.

The air conditioner unit 14 includes the backflow suppression member 46. Thus, for example, it is possible to suppress the flow of the air from the air supply chamber 30 to the return air chamber 32 through the air conditioner body 24, that is, backflow of gas.

Since the air conditioner body 24 includes the cooling device 26, it is possible to send cooled air as the adjusted air to the server room 18 and to effectively cool the servers 22.

Next, a second embodiment will be described. In the second embodiment, similar reference numerals are given to similar elements, members, and the like as those of the first embodiment, and a detailed description will be omitted.

In the first embodiment described above, the spare machine unit 62 is provided at an end in the arrangement direction of the air conditioner units 14, but in an air conditioning system 72 of the second embodiment, the spare machine unit 62 is provided midway in the arrangement direction of the air conditioner unit 14 as illustrated in FIG. 14. The air supply chamber 30 and the return air chamber 32 of the spare machine unit 62 are respectively connected to the air supply chambers 30 and the return air chambers 32 of the adjacent air conditioner units 14 on both sides by the air supply side connection sections 48 and the return air side connection sections 52.

As described above, the position of the spare machine unit 62 is not limited. Furthermore, the spare machine units 62 may be disposed at an end and midway in the arrangement direction of the air conditioner units 14.

Next, a third embodiment will be described. In the third embodiment, similar reference numerals are given to similar elements, members, and the like as those of the first and second embodiments, and a detailed description will be omitted.

As illustrated in FIG. 15, in an air conditioning system 82 of the third embodiment, the number of air conditioner units 14 sending the adjusted air to a specific server room 18D is great. Specifically, one air conditioner unit 14D is added in the arrangement direction of the air conditioner units 14 and one air conditioner unit 14E is added in a direction orthogonal to the arrangement direction of the air conditioner units 14. Further, the spare machine unit 62 is connected to the air conditioner unit 14E.

Compared to the first and second embodiment, it is possible to increase supply capacity of the adjusted air with respect to the specific server room 18D in the third embodiment.

Next, a fourth embodiment will be described. In the fourth embodiment, similar reference numerals are given to similar elements, members, and the like as those of the first to third embodiments, and a detailed description will be omitted.

As illustrated in FIG. 16, in the fourth embodiment, a server room is large compared to the first to third embodiments and one air conditioning system 92 corresponds to one server room 98. The adjusted air is sent to a server set 22G (the number of sets is referred to as K; K=5 in FIG. 16) of servers 22 from each of N (N is a natural number; N=4 in FIG. 16) air conditioner units 14. As a whole, N×K air conditioner units 14 and at least one (one in FIG. 16) spare machine unit 62 are provided in the air conditioning system 92.

In the fourth embodiment, in a state where all air conditioner bodies 24 of the plurality of air conditioner units 14 are driven and the spare machine unit 62 is stopped, the adjusted air is sent from N (K×N in total) air conditioner bodies 24 to each of K server sets 22G. The air is returned from the server room 98 to the air conditioner bodies 24.

In the fourth embodiment, when one of the air conditioner bodies 24 is stopped, for example, control similar to the control flow illustrated in FIG. 6 is performed and thereby, it is possible to send the adjusted air from N air conditioner bodies 24 to each server set 22G as illustrated in FIG. 17.

In the fourth embodiment, if a desirable amount of the adjusted air of each server set 22G is changed, it is possible to adjust a sending amount of the adjusted air to the server set 22G by the control flow of the air conditioning control method illustrated in FIG. 9.

In the fourth embodiment, it is possible to employ the structure in which the spare machine unit 62 is disposed midway in the arrangement direction of the air conditioner unit 14 as in the second embodiment.

FIG. 18 illustrates an air conditioning system 122 of a second comparative example. In the second comparative example, a plurality of air conditioner bodies 24 and one air conditioning spare machine body 64 are provided for each of a plurality of server sets 22G in a server room 18. That is, the air conditioning system 122 of the second comparative example includes the same number of the air conditioning spare machine bodies 64 as that of the server sets 22G.

According to the air conditioning system 92 of the fourth embodiment, it is possible to reduce the number of the air conditioning spare machine bodies 64 compared to the air conditioning system 122 of the second comparative example.

In each embodiment described above, it is assumed that an air amount (ability to supply the adjusted air) of each air conditioner body 24 and the air conditioning spare machine body 64 is stable, but the air amount of the air conditioner body 24 may be variable.

If the air amount of the air conditioner body 24 is variable, when assigning the same number of the air conditioner bodies 24 to each server room 18, there may be a server room 18 in which the load for each air conditioner body 24 becomes the minimum and a server room 18 in which the load becomes the maximum. The control device 28 may calculate the loads of an entire air conditioning system 12 in a case where air conditioner bodies 24 of the same number are assigned to each server room 18. Furthermore, the control device 28 may calculate the loads of the entire air conditioning system 12 in a case where the number of the air conditioner bodies 24 assigned to a server room 18 in which the load of the air conditioner bodies 24 becomes the minimum is decreased and the number of the air conditioner bodies 24 assigned to a server room 18 in which the load becomes the maximum is increased. Then, it is possible to change the air amount of the air conditioner bodies 24 or a corresponding relationship between a server room 18 and air conditioner units 14 so as to set the load to be the lower of the calculated two loads.

In each embodiment described above, since the air conditioner body 24 and the air conditioning spare machine body 64 include the cooling device 26, it is possible to reliably (forcedly) cool the air by the air conditioner body 24 and the air conditioning spare machine body 64.

All examples and conditional language recited herein are intended for pedagogical purposes to aid the reader in understanding the invention and the concepts contributed by the inventor to furthering the art, and are to be construed as being without limitation to such specifically recited examples and conditions, nor does the organization of such examples in the specification relate to a showing of superiority or inferiority of the invention. Although the embodiments of the present invention have been described in detail, it should be understood that various changes, substitutions, and alterations could be made hereto without departing from the spirit and scope of the invention. 

What is claimed is:
 1. An air conditioner unit comprising: an air conditioner body; a first outgoing chamber through which adjusted air flowing in from the air conditioner body is supplied to a target room; an outgoing connection section through which the first outgoing chamber communicates with a second outgoing chamber of an adjacent air conditioner unit, the outgoing connection section being connected to the first outgoing chamber; an outgoing communication member configured to open and close the outgoing connection section; an outgoing port through which the adjusted air is supplied from the first outgoing chamber to the target room; and an outgoing port member configured to open and close the outgoing port.
 2. The air conditioner unit according to claim 1, further comprising: a first incoming chamber through which discharged air is returned from the target room to the air conditioner body; an incoming connection section through which the first incoming chamber communicates with a second incoming chamber of the adjacent air conditioner unit, the incoming connection section being connected to the first incoming chamber; an incoming communication member configured to open and close the incoming connection section; an incoming port through which the discharged air is returned from the target room to the first incoming chamber; and an incoming port member configured to open and close the incoming port.
 3. The air conditioner unit according to claim 2, further comprising: a backflow suppressing member configured to suppress a flow of air from the first outgoing chamber to the first incoming chamber through the air conditioner body.
 4. The air conditioner unit according to claim 1, wherein the air conditioner body includes a cooling device configured to cool air.
 5. The air conditioner unit according to claim 2, wherein a first outgoing connection section is provided at one end of the first outgoing chamber and a second outgoing connection section is provided at another end of the first outgoing chamber, and a first incoming connection section is provided at one end of the first incoming chamber and a second incoming connection section is provided at another end of the first incoming chamber.
 6. The air conditioner unit according to claim 1, wherein the first outgoing chamber and the first incoming chamber have a same length.
 7. An air conditioning system comprising: a first air conditioner unit including: a first air conditioner body, a first outgoing chamber through which first adjusted air flowing in from the first air conditioner body is supplied to a first target room, a first outgoing connection section connected to the first outgoing chamber, a first outgoing communication member configured to open and close the first outgoing connection section, a first outgoing port through which the first adjusted air is supplied from the first outgoing chamber to the first target room, and a first outgoing port member configured to open and close the first outgoing port; and a second air conditioner unit including: a second air conditioner body, a second outgoing chamber through which second adjusted air flowing in from the second air conditioner body is supplied to a second target room, a second outgoing connection section through which the second outgoing chamber communicates with the first outgoing chamber through the first outgoing connection section, the second outgoing connection section being connected to the second outgoing chamber, a second outgoing communication member configured to open and close the second outgoing connection section, a second outgoing port through which the second adjusted air is supplied from the second outgoing chamber to the second target room, and a second outgoing port member configured to open and close the second outgoing port.
 8. The air conditioning system according to claim 7, wherein the first air conditioner unit further includes: a first incoming chamber through which first discharged air is returned from the first target room to the first air conditioner body, a first incoming connection section connected to the first incoming chamber, a first incoming communication member configured to open and close the first incoming connection section, a first incoming port through which the first discharged air is returned from the first target room to the first incoming chamber, and a first incoming port member configured to open and close the first incoming port, and the second air conditioner unit further includes: a second incoming chamber through which second discharged air is returned from the second target room to the second air conditioner body, a second incoming connection section through which the second incoming chamber communicates with the first incoming chamber through the first incoming connection section, the second incoming connection section being connected to the second incoming chamber, a second incoming communication member configured to open and close the second incoming connection section, a second incoming port through which the second discharged air is returned from the second target room to the second incoming chamber, and a second incoming port member configured to open and close the second incoming port.
 9. The air conditioning system according to claim 8, wherein the second air conditioner unit further includes: a fourth outgoing connection section connected to the second outgoing chamber, and a fourth incoming connection section connected to the second incoming chamber, the air conditioning system further comprising: an air conditioner spare unit including: an air conditioner spare body, an outgoing spare chamber through which adjusted air flowing in from the air conditioner spare body is supplied to the second outgoing chamber, the outgoing spare chamber being caused to communicate with the second outgoing chamber through the fourth outgoing connection section, and an incoming spare chamber through which the second discharged air is returned from the second incoming chamber to the air conditioner spare body, the incoming spare chamber being caused to communicate with the second incoming chamber through the fourth incoming connection section.
 10. An air conditioning control method, comprising: sending, by each of a plurality of air conditioner units, adjusted air generated by an air conditioner body from an outgoing chamber to a target room corresponding to each of the plurality of air conditioner units, the air conditioner body and the outgoing chamber being included in each of the plurality of air conditioner units; returning, by each of the plurality of air conditioner units, discharged air from the target room to the air conditioner body through an incoming chamber included in each of the plurality of air conditioner units; and performing a first reconfiguration when a desirable amount of adjusted air in a first target room is changed, wherein the first reconfiguration includes: changing communication positions of the outgoing chambers included in the plurality of air conditioner units, the outgoing chambers being communicably connected with adjacent outgoing chambers, and changing communication positions of the incoming chambers included in the plurality of air conditioner units, the incoming chambers being communicably connected with adjacent incoming chambers.
 11. The air conditioning control method according to claim 10, further comprising: performing a second reconfiguration when a first air conditioner body included in a first air conditioner unit is stopped, wherein the second reconfiguration includes: driving an air conditioner spare body included in an air conditioner spare unit, causing an outgoing spare chamber to communicate with an outgoing chamber adjacent to the outgoing spare chamber, the outgoing spare chamber being included in the air conditioner spare unit, causing an incoming spare chamber to communicate with an incoming chamber adjacent to the incoming spare chamber, the incoming spare chamber being included in the air conditioner spare unit, changing communication positions of the outgoing chambers, and changing communication positions of the incoming chambers. 